Case insensitive check on username before registration, min-limit of 3 chars
Case insensitive check on username before registration, min-limit of 3 chars

foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm,foocorp/gnu-fm